Lack and accumulation of boron in the leaves after foliar spraying in cabbage and cauliflower plants

• Autor(a) principal: Alves, Adriana Ursulino
• Data de Publicação: 2020
• Outros Autores: Prado, Renato de Mello [UNESP], Gondim, Ancélio Ricardo de Oliveira, Correia, Marcus André Ribeiro, Cecílio Filho, Arthur Bernardes [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.15361/1984-5529.2020V48N1P76-84; http://hdl.handle.net/11449/233005
• topic: Brassicas; Micronutrient; Nutrition

Boron deficiency causes biological damage in brassicas according to the growth phase. In this condition, foliar spraying of B causes immediate effects of nutrient accumulation on leaves that may vary in brassicas but are not known. Therefore, the nutritional deficiency as well as the accumulation of B in the leaves over 30 days after their spraying on cabbage and cauliflower plants were evaluated. Were, two experiments were carried out to evaluate the lack of B in the nutritive solution on the nutrition, growth and production of the two brassicas. The other experiments evaluated the dry mass and B leaf content at 0.12 (3 h); 0.25 (6 h); 0.5 (12 h) 1, 5, 15 and 30 days after leaf spraying of the micronutrient and also in the plants that did not receive B in the two brassicas. The effect of the lack of boron was evident in the final growth stage of the plants, causing a decrease in productivity, cabbage was more sensitive to nutrient deficiency than cauliflower, however. Boron is slowly accumulated by the leaves of the 'Astrus' cabbage, absorbing 50% of the applied B, about 15 days after its application and 'Verona' cauliflower, at three days and 12 hours after its application.